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Author: Subject: Balancing Chemical Equations
Penguin
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[*] posted on 24-2-2005 at 19:07
Balancing Chemical Equations


I need help balancing chemical equations. I am not good at chemistry, and I am having trouble with my chemistry work at school. Can someone please explain how to balance the following equations in steps, and tell me how and why you did each step?

Mg + N2 ---> Mg3N2

P4 + O2 ---> P4O10




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cyclonite4
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[*] posted on 24-2-2005 at 19:10


3Mg + N2 ---> Mg3N2

P4 + 5O2 ---> P4O10

It's just simple math i guess, not much to explain, you'll get the hang eventually.:)

BTW, we aren't here to do your homework for you.
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neutrino
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[*] posted on 24-2-2005 at 19:13


It seems that you are, though.:P

If all else fails, start by balancing the reaction for one atom. Next, move onto a different atom. In the end, everything should balance...hopefully. As cyclonite said, though you eventually get the hang of it.
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tom haggen
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[*] posted on 24-2-2005 at 21:52


Is it just me or is gen chem much easier than math and physics?
Cause related rates problems are dirty little whores.




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cyclonite4
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[*] posted on 24-2-2005 at 23:01


Chem, IMO, is the easiest science/math subject, the hardest being calculus. Chemistry has been my best topic since I was 12/13.

When I first started chem, and we were balancing equations, the hardest one i ever hit was nitric acid oxidising copper metal, but now.... it's easy as.

It'll all make sense eventually Penguin. Good luck :D




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[*] posted on 25-2-2005 at 12:04


ya, I'm starting to understand it now. And by the way, I didn't post this topic to have someone do my homework for me. I posted this topic so someone can explain how to balance chemical formulas so I can do my homework.
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The_Davster
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[*] posted on 25-2-2005 at 15:46


Well here is a tip I was taught long ago... Start with the chemical compound that has the greatest number of elements in it, from there try to balance the equation by adding coeffecients to the compunds on the other side in an attempt to balance it. If not possible put a coeffecient of 2 infront of the chemical compound that has the greatest number of elements in it and start again, if that does not work try with a coefecient of three and so on. This is just a general rule, there are, of course, exceptions, but it is a good rule for beginners. Once you get the hang of it it seems quite simple, and, like riding a bike, you will never forget. :)



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sparkgap
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[*] posted on 25-2-2005 at 22:58


Well, cyclonite4, neutrino, and rogue chemist prety have much of the bases covered, so I'll just add a little tip: Balance the oxygens and hydrogens last if there are many elements present. It usually happens that in balancing the other elements, by the time you look at oxygen and/or hydrogen, they are balanced as well. Again, there will be exceptions.

Why would related rates problems be a bitch to you, tom?

sparky (^_^)




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cyclonite4
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[*] posted on 26-2-2005 at 04:51


i as actually gonna add a tip, which sparkgap seems to have covered...

when dealing with compunds with lots of oxygen (nitrates, sulfates, borates, etc.) leave the oxygen last and stick to the nitrogen in nitrate, sulfur in sulfate, boron in borate, etc.




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